Quick question concerning the soundtrack.  Does anyone know the names of the two themes that play during episode 125 when Ichigo and Kenpachi are discussing "battle" instinct (its during the scene where the kanji is displayed; it's right before Ichigo rips Tensa Zangetsu out of his stomach).  The other plays after Ichigo has impaled his inner Hollow with Tensa Zangetsu and his inner Hollow begins to dematerialize/burn away..  I REALLY want those two songs, so any help would be greatly appreciated.

Episode 125 was pretty-fucking-awesome.  I thought Ichigo in his complete Hollow form was fucking BEAST.  However, what I don't get is what exactly happened to Old Man Zangetsu?  I understand that Ichigo's inner Hollow took over him, but now that Ichigo has control over his inner Hollow, shouldn't Old Man Zangetsu return?

..and I don't want to spoil myself through the manga, even though I have a bit already..